摘要
采用ＸＲＤ，ＴＰＤ和ＴＰＲ等技术研究了ＭｎＯｘ／ＺｒＯ２催化剂的表面特性．结果表明，ＺｒＯ２表面的ＭｎＯｘ物种主要以Ｍｎ２Ｏ３和ＭｎＯ２形态存在，经还原氧化处理后，ＭｎＯｘ物种的分散状况趋好．ＭｎＺｒ之间的相互作用促进ＭｎＯ２的分解，而抑制Ｍｎ２Ｏ３的分解．
MnO x /ZrO 2 catalysts were characterized by XRD, TPD and TPR. The results indicated that MnO x species on ZrO 2 were mainly MnO 2 and Mn 2O 3. Reduction oxidation treatment raised the dispersion of MnO x species on ZrO 2. The interaction between MnO x and ZrO 2 promoted the decomposition of MnO 2, and restrained the decomposition of Mn 2O 3. The highly dispersed or little crystallite MnO x was the predominant contributor in oxidation activity for CO.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
1998年第5期398-401,共4页
关键词
氧化锰
催化剂
锰
表面性质
一氧化碳
氧化
Manganese oxide, Zirconia, Surface oxygen, Temperature programmed reduction, Temperature programmed desorption, Carbon monoxide, Oxidation
